CN1165656C - 透湿防水材料及其制造方法 - Google Patents

透湿防水材料及其制造方法 Download PDF

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CN1165656C
CN1165656C CNB998144819A CN99814481A CN1165656C CN 1165656 C CN1165656 C CN 1165656C CN B998144819 A CNB998144819 A CN B998144819A CN 99814481 A CN99814481 A CN 99814481A CN 1165656 C CN1165656 C CN 1165656C
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water
moisture
waterproof material
permeability waterproof
adhesive layer
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CN1330739A (zh
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竹田惠司
天野慈朗
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Toray Industries Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/12Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00Materials specially adapted for outerwear
    • A41D31/04Materials specially adapted for outerwear characterised by special function or use
    • A41D31/10Impermeable to liquids, e.g. waterproof; Liquid-repellent
    • A41D31/102Waterproof and breathable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/40Layered products comprising a layer of synthetic resin comprising polyurethanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/724Permeability to gases, adsorption
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/726Permeability to liquids, absorption
    • B32B2307/7265Non-permeable
    • BPERFORMING OPERATIONS; TRANSPORTING
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Abstract

本发明提供一种透湿防水材料及其制造方法,该材料具有高度的透湿性和防水性,同时,透湿耐水层等被膜层和布帛等纤维结构物的粘合性优良,具有高耐久性。该透湿防水材料,在透湿耐水层上涂布水膨润性粘合层作为最上层,制成膜,在该水膨润性粘合层上,压接纤维结构物,该结构物经过具有多个羟基的化合物进行了前处理,由此使水膨润性粘合层和纤维结构物加以粘合而制成。该透湿防水材料除用作室外服装、滑雪服以及室外作业工作服以外,用作手套、鞋子等也是合适的。

Description

透湿防水材料及其制造方法
技术领域
本发明涉及透湿防水材料及其制造方法。更详细地说,本发明涉及一种透湿耐水层等被膜层和布帛等纤维结构物粘接性优良的、具有高耐久性的透湿防水材料及其制造方法。
早先,透湿防水材料,特别是在被膜压粘在布帛上构成的叠层型材料中,被膜和布帛粘接时,可以采用利用粘合剂的方法。具体的作法是,把粘合剂涂布在被膜或布帛上,压接该被膜和布帛,通过使粘合剂固化,进行两者的粘接。
近些年来,在寻求更舒适的透湿防水材料中,从舒适性观点考虑,要寻求透湿性能高的粘合层,为此,现正使用透湿性优异的水膨润性高分子化合物作为达到此目的的粘合剂。
然而,在粘合剂层利用这样的水膨润性高分子化合物的场合,透湿防水材料的透湿性提高,但是,粘合层由于水膨润性则与纤维结构物的粘合性,特别是湿润时的粘合性低,是造成洗涤耐久性低的原因之一。
因此,在使用水膨润性的粘合剂层的场合,使湿润时的粘合性提高,是目前需解决的重大遗留课题。
发明的公开
鉴于上述现状,本发明的目的在于,提供一种透湿性及耐水性均优良的,同时,透湿耐水层等被膜层和纤维结构物的粘合性优异的、在洗涤等湿润时具有粘合耐久性的透湿防水材料及其制造方法。
为了解决上述课题,本发明的透湿防水材料具有下列构成。
也就是说,本发明的透湿防水材料是透湿耐水层通过水膨润性粘合层与纤维结构物粘合而构成的透湿防水材料,其中,构成该纤维结构物的单纤维的表面,用前处理剂加以覆盖,该前处理剂的主要成分是具有多元羟基的化合物,该纤维结构物和该水膨润性粘合层,通过该前处理剂加以粘接,构成透湿防水材料。
另外,本发明的透湿防水材料,具有下列理想的模式。
(a)上述前处理剂是以酚树脂衍生物作为主要成分的树脂。
(b)上述水膨润性粘合层是由水膨润性聚氨酯和多元醇衍生物的混合物构成的,并且,通过多异氰酸酯加以交联的粘合层。
(c)多元醇中构成聚乙二醇的乙二醇数对构成上述水膨润性聚氨酯的异氰酸酯数之比是20以上不到30。
(d)上述多元醇衍生物是丙三醇衍生物。
(e)上述多异氰酸酯是脂肪族异氰酸酯衍生物。
(f)上述粘合层是连续的树脂层。
(g)上述透湿耐水层是以聚氨酯作为主要成分的连续的树脂层。
另外,本发明的透湿防水材料的制造方法具有下列构成。
也就是说,在透湿耐水层上涂布水膨润性粘合层,构成最上层,制成膜,在该水膨润性粘合层上压接纤维结构物,该纤维结构物是用具有多元羟基的化合物作为主要成分的前处理剂处理过的,把水膨润性粘合层和纤维结构物加以粘接的透湿防水材料制造方法。
另外,本发明的透湿防水材料的制造方法具有下列理想的模式。
(a)上述前处理,是把纤维结构物浸渍在前处理剂水溶液中,然后,热处理使其固着的处理。
(b)上述前处理,是在浴中使前处理剂被吸尽,固着在纤维制造物中的处理。
这种构成在本发明中的作用是,单纤维表面对水膨润性粘合层的润湿性高,并且,由于具有交联性能优良的官能团,即使在利用具有水膨润性的高透湿性粘合层的场合,也可以得到具有高粘合性,特别是湿润时具有粘合性的材料。
实施本发明的最佳方案
本发明的透湿防水材料是透湿耐水层通过水膨润性粘合层与纤维结构物加以粘接而构成的材料。
这里的所谓透湿耐水层,系指透湿性和防水性兼备的被膜层。
所谓在透湿耐水层中的透湿,系指由于发汗而在衣服内生成的汗的蒸气、液体的汗本身通过膜面从衣服内往衣服外散发的能力,而所谓耐水,系指阻止降雨、降雪生成的水滴等,通过膜面从衣服外进入衣服内的能力。
作为透湿耐水层,具体的可以举出有代表性的例子是聚氨酯类树脂的干式无孔膜以及湿式多孔膜、亲水性聚酯弹性体类树脂构成的无孔膜、拉伸聚四氟乙烯构成的多孔膜等。在本发明中,所得到的透湿防水材料的风格,特别是从伸展性及所谓耐寒性的观点考虑,透湿耐水层,优选以聚氨酯作为主要成分的连续(对“连续”在后面加以介绍)树脂层。
透湿耐水层的厚度,从透湿性和耐水性、粘接后材料的风格等观点考虑,5~50μm是理想的,10~30μm是更理想的。
这种透湿耐水层,通过水膨润性粘合剂,在其粘合力作用下与纤维结构物粘结。
作为构成本发明所用的水膨润性粘合层的粘合剂,可以举出聚氨酯类树脂、丙烯酸类树脂、醋酸乙烯树脂类等溶剂型、乳状液型、热熔型、反应性热熔型粘合剂,以及,它们并用的粘合剂,但是,特别是,聚氨酯树脂类粘合剂是理想的,这是因为对透湿耐水层及构成纤维结构物的材料可得到良好的粘合性,并且,具有透湿性。
这里的所谓水膨润性,系指在聚合物分子之间对气态的水吸湿,对液态的水吸水,所以致使聚合物分子间吸附着大量水分子,从而导致树酯本身包含着水而发生膨润的性质。
粘合层的厚度,从透湿性和耐久性、粘合后材料的风格等观点考虑,10~100μm是理想的,20~40μm是更加理想的。
另外,在本发明中,通过水膨润性粘合层,透湿耐水层粘合的构成纤维结构物的单纤维表面用上述前处理剂被覆是重要的。
通过前处理,前处理剂存在于粘合剂和单纤维之间,粘接时,粘合剂和单纤维间的粘合性变得更加牢固。结果是,透湿耐水层可牢固地固着在纤维结构物上,同时,可以使与粘合剂的润湿性以及交联性提高。
这里,在用前处理剂被覆单纤维的表面的产物中,包括用前处理剂把单纤维表面部分或全部被覆的状态,另外也包括,单纤维表面层中吸尽前处理剂的状态。
本发明所用的前处理剂,是以含有多个羟基的化合物作为主要成分的前处理剂。在用这样的化合物作为前处理剂的场合,因为羟基存在于单纤维表面,所以,可大大改善取决于粘合剂的润湿性以及交联性,并且,提高粘合性。
另外,在本发明中,采用具有2个以上羟基的化合物作为前处理剂是理想的。作为具有2个以上羟基的化合物,采用多元酚衍生物是特别合适的。所谓多元酚衍生物,系指酚衍生物聚合物化的产物及其改性的衍生物,其中,线型酚醛清漆树脂的磺化产物可以很好地加以利用,然而,本发明并不局限于这些。
本发明所用的上述水膨润性粘合层,水膨润性聚氨酯和多元醇衍生物的混合物是理想的。
所谓水膨润性聚氨酯,意指将其单独作成连续膜,把该膜浸渍在水中时,是线膨润率达到3%以上的树脂层。
为了呈现充分的透湿性能,利用具有5%以上,更理想的是具有10%以上的线膨润率的聚氨酯树脂是理想的。
因水膨润性粘合层采用聚氨酯树脂,所以,将水膨润性粘合层粘接到纤维结构物上时,具有优异的风格和展伸性,另外,即使在膜厚度不同的被膜加以叠层时,膜之间彼此的协同性非常优异的叠层物也可构成。
作为聚氨酯树脂,包括多异氰酸酯和多元醇反应得到的共聚物。
作为异氰酸酯成分,可以使用芳香族二异氰酸酯、脂肪族二异氰酯酯的单独或其混合物。
例如,可以采用甲苯二异氰酸酯、4,4’一二苯基甲烷二异氰酸酯、4,4’-亚甲基双(环己基异氰酸酯)、六亚甲基二异氰酸酯、亚二甲苯基二异氰酸酯、异佛尔酮二异氰酸酯等。另外,作为多元醇成分,可以采用聚醚多元醇、聚酯多元醇等。作为聚醚多元醇,可以举出聚乙二醇、聚丙二醇、聚1,4-丁二醇等,作为聚酯多元醇,可以举出乙二醇、丙二醇等二醇和己二酸、癸二酸等二元酸的反应产物以及己内酯等的开环聚合物等。另外,使用醚/酯类、酰胺类、碳酸酯类的化合物也合适。
在本发明中,从保持或提高树脂抗张力的观点考虑,作为多异氰酸酯,采用4,4’一二苯基甲烷二异氰酸酯、4,4’-亚甲基双(环己基异氰酸酯)是合适的,从透湿性的观点考虑,作为多元醇,采用以聚乙二醇作为主要成分的聚氨酯树脂是合适的。
作为多元醇衍生物,可以举出乙二醇、丙二醇、1,4-丁二醇、丙三醇以及三甲基丙醇等单体的聚合物、具有缩水甘油醚等反应性末端的多元醇衍生物。
将这样的多元醇衍生物相对于水膨润性聚氨酯重量,将3%以上不到50%,理想的为10%以上不到30%加以混合后,可以大大提高粘合时粘合剂和前处理剂的润湿性以及初期粘合性,大幅度改善粘合性,同时,可以抑制交联时的透湿性下降。
然而,该水膨润性聚氨酯和多元醇衍生物的混合物,在用多异氰酸酯进行交联的同时,与覆盖纤维结构物的前处理剂层也可进行交联,这是理想的。
这里所用的多异氰酸酯,可以使用芳香族类多异氰酸酯以及脂肪族类多异氰酸酯中的任何一种,而使用甲苯二异氰酸酯、4,4’一二苯基甲烷二异氰酸酯、4,4’-亚甲基双(环己基异氰酸酯)、六亚甲基二异氰酸酯、亚二甲苯基二异氰酸酯、异佛尔酮二异氰酸酯等2聚体及3聚体、用三甲基丙烷改性的3聚体等是合适的。
通过将这样的多异氰酸酯相对于水膨润性聚氨酯的重量混合反应3%以上不到50%,而理想的是混合反应10%以上不到30%,则粘合层的交联以及前处理剂的交联引起的粘合性及透湿性可以保持和发挥。
在本发明中,从发挥优良的透湿性的观点考虑,构成多元醇中聚乙二醇的乙二醇数对构成粘合层中水膨润性聚氨酯的异氰酸酯数之比,20以上不到30是理想的。
如上所述,当软链段对硬链段的比例高时,通过使用导入高亲水性软链段的聚氨酯树脂,可以保持交联后的高透湿性。
另外,作为多元醇衍生物,从保持透湿性的观点考虑,利用水溶性多元醇衍生物是理想的。另外,在多元醇衍生物中可以并用其他化合物。作为并用的化合物,从并用时的稳定性和安全性等观点考虑,使用丙三醇衍生物是合适的,其中,丙三醇是合适的。
另外,用于水膨润性粘合层交联的多异氰酸酯,脂肪族类并氰酸酯衍生物是理想的。
水膨润性粘合层,因为粘接在纤维结构物上,采用不发生变黄类型的多异氰酸酯是更合适的,另外,以控制交联时反应性的观点考虑,使用六亚甲基二异氰酸酯的2聚体及3聚体、用三甲基丙烷等改性的3聚体是理想的。
在本发明中,在纤维结构物上设置的水膨润性粘合层,连续的树脂层是理想的。这里的所谓连续的树脂层,系指在树脂被膜与纤维结构物粘接的范围内为2维连接,不存在不连续的场所。通过采用这样的连续层,在所谓点粘接见到的膜被裂而造成的耐水压下降,以及由于摩擦而造成的膜面破损可大幅降低。另外,由于采用了高透湿性的粘合层,由于全面粘合引起的透湿性的下降也可显著抑制,从而可以得到具有非常高的透湿性和耐水性兼备的产物。
作为本发明所用的纤维结构物,系指聚酯类、聚酰胺类、丙烯酸类等合成纤维,以及,棉、羊毛、丝等天然纤维等的纤维所构成的织物、针织物、无纺布等布帛形态,然而,并不限于这些。作为纤维结构物,合适的是使用作为衣料用途中的布帛形态。其中,聚对苯二甲酸乙二醇酯、聚对苯二甲酸丙二醇酯、聚对苯二甲酸丁二酯等聚酯纤维、尼龙6、尼龙66等聚酰胺纤维所构成的布帛是理想的。
本发明的透湿防水材料,系指同时具有透湿性和防水性的材料。所谓透湿防水材料的透湿,是与透湿耐水层的透湿同样定义的能力,也就是说,由于发汗在衣服内产生的汗蒸气、液体汗本身通过膜面从衣服内往衣服外散发的能力。本发明材料的透湿性为10000~40000g/m2·24hr,理想的为15000~35000g/m2·24hr。
另外,所谓防水,系指防止降雨、降雪等产生的水滴从衣服外通过膜面进入衣服内的能力。本发明材料的防水性用耐水压评价,达到2.0kgf/cm2(1.96MPa),理想的为3.0kgf/cm2(2.94MPa)以上。
下面对本发明的透湿防水材料的制造方法加以说明。
在透湿防水层上涂布水膨润性粘合层作为最上层,涂布时,在含溶剂等的场合下,通过去除溶剂,制成膜,在该水膨润性粘合层上,压接纤维结构物,该纤维结构物用含有多元羟基的化合物作为主要成分的前处理材料进行了前处理,通过使其粘接,可以制造出透湿防水材料。
具体的是,首先最初地,在单独透湿耐水层上,或在脱模支持体上载置的透湿耐水层上,用刮刀辊涂布法、直接辊筒涂布法、反向辊筒涂布法或照相凹版涂布法等涂布方法,以适当设定的涂布量涂布粘合剂,使达到所希望的膜厚作为粘合层,于温度50~150℃、0.5分~10分钟的条件进行干燥,制成被膜。在涂布作为连续层的粘合层时,刮刀涂布方式是理想的。
关于脱模支持体,可以使用例如膜及纸等、表面是平滑的,而且该表面对于支持体上形成的树脂膜亲和性低的片状基体材料。通常,作为脱模支持体,采用涂布聚硅酮树脂的脱模纸及膜、叠层了聚丙烯的脱模纸等是理想的。
其次,在粘合层上,压接经过具有多个羟基的化合物等前处理过的纤维结构物,使粘合层和纤维结构物粘合,由此制造透湿防水材料。也就是说,具体的是在采用上述方法制成的透湿耐水层和粘合层的叠层物上,把经过前处理剂前处理过的纤维结构物加以重合,采用加压,通过粘合层使作为透湿耐水层的树脂层和纤维结构物粘合。
这里的所谓压接,意指施加压力使其压紧粘合,例如,在辊筒与辊筒之间加压,在脱模支持体上,使与树脂层重叠的纤维结构物通过该辊筒之间加以粘合。此时,当在辊筒间施加所希望的压力的同时,加热辊筒,因粘合层再熔融,也可以提高压接性能。
在采用脱模支持体的场合,透湿防水材料从脱膜支持体剥离后,把所得到的透湿防水材料加以陈化,或者,在陈化后把透湿防水材料从脱模支持体上剥离。另外,对所得到的透湿防水材料的纤维结构物表面,也可用已知的方法进行适当的憎水处理。
在本发明中,前处理是把纤维结构物浸渍在含前处理剂的水溶液中,进行热处理使其固着的方法,或者,使浴中的前处理剂被吸尽固着在纤维结构物中的方法等进行处理。
采用把纤维结构物浸渍在含前处理剂的水溶液中,进行热处理使其固着的方法,系将其浸渍在与纤维结构物的轧液率相匹配的溶解了所希望浓度的处理液中,用轧液机进行挤压,然后,进行热处理,使其固着即可。在耐久性低的场合采用这样的方法,也可以同时使用适当的交联性树脂。
另外,采用在浴中把前处理剂吸尽固着在纤维结构物中的方法,系把纤维结构物浸渍在含前处理剂的水溶液中,在浴中升温,使其吸尽附着在构成纤维结构物的纤维中加以固着即可。
通过利用这样的作用,本发明的透湿防水材料,除用作钓鱼服、登山服等户外服装、滑雪服、风衣、健身服、高尔夫球运动服、防雨服、轻便大衣等以外,也可以用作室外作业工作服、手套和鞋等。
实施例
下面用实施例更具体地说明本发明。还有,本发明所用的基布以及评价方法如下所示。
基布:
(1)由尼龙6纤维构成的塔夫绸
纱线的类型:经纱70旦尼尔(77.7dtex)~68根长丝,
            纬纱70旦尼尔(77.7dtex)~68根长丝
织物密度:116×88根/英寸
目    付:72g/m2
(2)由聚对苯二甲酸乙二醇酯纤维构成的塔夫绸
纱线的类型:经纱75旦尼尔(83.3dtex)~72根长丝
            纬纱75旦尼尔(83.3dtex)~72根长丝。
织物密度:110×95根/英寸
目    寸:150g/m2
透湿性:
按照JIS L 1099醋酸钾法测定。
耐水压:
按照JIS L 1092高水压法测定。
湿润时的剥离强度:
于水中浸渍5分钟后测定剥离强度
连续洗涤的耐久性:
把试样膜面从基布上剥离,连续水洗至膜面上产生浮膜,以连续水洗的时间作为连续洗涤的耐久性进行评价,100小时以上为具有耐久性。
实施例1
(1)由经过初处理过的尼龙纤维构成的塔夫绸的制造
制备低分子量的线型酚醛清漆树脂的磺化化合物的1.2%水溶液,用醋酸和硫酸调节pH至约2.4。把由尼龙纤维构成的塔夫绸浸渍在这样制成的水溶液中,2dip/2nip以后,于120℃×2min的条件下进行干燥。干燥后,进行水洗,于110℃使其干燥,得到经前处理剂处理过的尼龙纤维所构成的塔夫绸。
(2)构成透湿耐水层的树脂溶液的制备
异氰酸酯是4,4’-二苯基甲烷二异氰酸酯,将构成多元醇中聚乙二醇的乙二醇数相对于异氰酸酯数之比为8.4的水膨润性聚氨酯树脂溶于二甲基甲酰胺39份和甲乙酮61份的混合溶剂中,制成23%(重量)的溶液。
(3)构成粘合层的树脂溶液的制备
异氰酸酯为4,4’-亚甲基双(环己基异氰酸酯),将构成多元醇聚乙二醇的乙二醇数相对于异氰酸酯数之比为27的水膨润性聚氨酯树脂溶于二甲基甲酰胺58份和甲乙酮27份和甲苯15份构成的混合溶剂中,制成23%(重量)的溶液。往该溶液中以相对于树脂重量为22%(重量)的量添加丙三醇,另外,以相对于树脂重量为10%(重量)的量,添加作为六亚甲基二异氰酸酯三聚体的异氰酸酯结合的六亚甲基二异氰酸酯,制成构成粘合层的树脂溶液。
其次,在脱模纸上,用刮刀涂布机以间隙100μm涂布透湿耐水层树脂溶液,于120℃干燥2分钟,使形成被膜。
然后,在形成膜的透湿耐水层上,用刮刀涂布机,以间隙150μm涂布用于形成粘合层的树脂溶液,于120℃干燥2分钟,使形成被膜。在其粘合层上,重叠上经前处理剂处理过的尼龙纤维塔夫绸,使其通过金属辊筒和橡胶辊筒之间的线压为1.2kg/cm、金属辊筒温度130℃、速度5.7m/min的热辊筒,使尼龙纤维塔夫绸和粘合层紧密粘合,再次使其通过线压8.9kg/cm、金属辊筒温度130℃、速度5.7m/min的热辊筒,使其粘合。
粘合后,剥离脱模纸,把试样于室温陈化48小时。陈化后,只对基布表面(尼龙纤维塔夫绸一侧的表面),用照相凹版涂布法进行憎水处理,于160℃处理2分钟,制成本发明的透湿防水材料。
所得到的透湿防水材料,其透湿性为23000g/m2·24hr,耐水压3.0kgf/cm2(2.94MPa),具有高度的透湿性和防水性,同时,湿润时剥离强度为320g/cm、连续洗涤的耐久性达到100小时以上,为耐久性优良的透湿防水材料。
实施例2
(1)由用前处理剂处理过的聚酯纤维构成的塔夫绸的制造
制备低分子量的线型酚醛清漆树脂磺化化合物的1.2%水溶液,用氢氧化钠调节pH至7,然后,添加作为交联剂的羟甲基密胺树脂,使达到0.5%。把聚酯纤维构成的塔夫绸浸渍在这样制成的水溶液中,2dip/2nip后,于120℃干燥2分钟。干燥后,进行水洗,于110℃干燥,得到前处理剂处理过的聚酯纤维构成的塔夫绸。
作为基布(纤维结构物),除了用聚酯织物(塔夫绸)来代替尼龙纤维塔夫绸以外,采用与实施例1同样的方法,制作透湿防水材料。
所得到的透湿防水材料,其透湿性为31000g/m2·24hr,耐水压为3.0kgf/cm2(2.94MPa),具有高度的透湿性和防水性,同时,湿润时的剥离强度为290g/cm、连续洗涤的耐久性为100小时以上,为耐久性优良的透湿防水材料。
实施例3
除了在透湿耐水层采用硬链段为聚对苯二甲酸丁二醇酯、软链段为聚醚构成的嵌段共聚物的Hytrel(ハイトレル)8017膜(30μm)以外,采用与实施例1同样的方法,制作透湿防水材料。
所得到的透湿防水材料,其透湿性为18000g/m2·24hr,耐水压3.0kgf/cm2(2.94MPa),具有高度的透湿性和防水性,同时,湿润时的剥离强度为300g/cm,连续洗涤的耐久性大于100小时,为耐久性优良的透湿防水材料。
实施例4
除了在透湿耐水层使用硬链段为聚对苯二甲酸乙二酯、软链段为聚醚所构成的嵌段共聚物Hytrel 8071膜(30μm)以外,采用与实施例1同样的方法制作透湿防水材料。
所得到的透湿防水材料,其透湿性为26000g/m2·24hr,耐水压3.0kgf/cm2(2.94MPa),具有高度的透湿性和防水性,同时,湿润时剥离强度为300g/cm,连续洗涤的耐久性为100小时以上,为耐久性优良的透湿防水材料。
实施例5
在构成粘合层的树脂溶液进行调节时,除了不添加丙三醇以外,采用与实施例1同样的方法制作透湿防水材料。
所得到的透湿防水材料,其透湿性为16000g/m2·24hr,耐水压为3.0kgf/cm2(2.94MPa),具有高度的透湿性和防水性,同时,湿润时的剥离强度为160g/cm,连续洗涤的耐久性100小时以上,为耐久性优良的透湿防水材料。
比较例1
作为由尼龙纤维构成的塔夫绸,除了采用未经前处理剂处理的塔夫绸以外,采用与实施例1同样的方法,制作透湿防水材料。
所得到的透湿防水材料,其透湿性为23000g/m2·24hr,耐水压为3.0kgf/cm2(2.94MPa),具有高度的透湿性和防水性,但是,湿润时的剥离强度为110g/cm,连续洗涤时的耐久性小于24小时,为耐久性差的材料。
比较例2
作为由聚酯纤维构成的塔夫绸,除了用未经前处理剂处理的塔夫绸以外,采用与实施例1同样的方法,制作透湿防水材料。
所得到的透湿防水材料,其透湿性为32000g/m2·24hr耐水压3.0kgf/cm2(2.94MPa),具有高度的透湿性和防水性,但是,湿润时的剥离强度为240g/cm,连续洗涤的耐久性小于24小时,为耐久性差的材料。
工业上利用的可能性
按照本发明,具有上述构成的单纤维表面对水膨润性粘合层的润湿性高,并且,由于具有交联性优良的官能团,即使在用作具有水膨润性的高透湿性粘合层的场合,仍可以形成具有高的粘合性,特别是湿润时具有粘合性的透湿防水材料。因此,具有高度的透湿性和防水性,同时,可以得到具有高的膜面强度的透湿防水材料,尤其是在叠层材料中可扩大其用途。
本发明的透湿防水材料,因为利用其这样的性能,除了用作钓鱼服、登山服等户外服装、滑雪服、风衣、健身服、高尔夫球运动服、防雨服、轻便大衣等以外,还可以用作室外作业工作服、手套和鞋等。

Claims (11)

1、一种透湿防水材料,该透湿防水材料是透湿耐水层通过水膨润性粘合层与纤维结构物粘合构成的透湿防水材料,其特征是,构成该纤维结构物的单纤维表面,用具有多个羟基的化合物作为主要成分的前处理剂被覆,该纤维结构物和该水膨润性粘合层通过该前处理剂加以粘合。
2、权利要求1的透湿防水材料,其中,所述前处理剂是以酚树脂衍生物作为主要成分的树脂。
3、权利要求1或2的透湿防水材料,其中,所述水膨润性粘合层,由水膨润性聚氨酯和多元醇衍生物的混合物构成,并且,通过多异氰酸酯交联后形成的。
4、权利要求3的透湿防水材料,其中,构成多元醇中聚乙二醇的乙二醇数相对于构成上述水膨润性聚氨酯的异氰酸酯数之比,为20以上不到30。
5、权利要求3的透湿防水材料,其中,所述多元醇衍生物为丙三醇衍生物。
6、权利要求3的透湿防水材料,其中,所述多异氰酸酯为脂肪族异氰酸酯。
7、权利要求1的透湿防水材料,其中,所述粘合层是连续的树脂层。
8、权利要求1的透湿防水材料,其中,所述透湿耐水层是以聚氨酯作为主要成分的连续树脂层。
9、一种透湿防水材料的制造方法,其特征是,在透湿耐水层上涂布水膨润性粘合层作为最上层,制成膜,在该水膨润性粘合层上,压接用前处理剂前处理过的纤维结构物,将水膨润性粘合层和纤维结构物粘接,而该前处理剂是以具有多个羟基的化合物作为主要成分。
10.权利要求9的透湿防水材料的制造方法,其中所述前处理是把纤维结构物浸渍在前处理剂水溶液中,然后,热处理使其固着的处理。
11.权利要求9或10的透湿防水材料的制造方法,其中,所述前处理是在浴中使前处理剂吸尽、固着在纤维结构物上的处理。
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